Viana do Castelo weather in September (Norte Region, Portugal)

What weather conditions can you expect in Viana do Castelo this September? Thinking about a visit? Explore this page for a full overview of the weather conditions this month.

Temperatures

The weather in Viana do Castelo during September is usually perfect, offering high temperatures and moderate rainfall. During September, the summer season is in full swing. During the day, temperatures can climb to about 22°C. At night, they may fall to a cooler 16°C.

Precipitation

Viana do Castelo in September usually receives moderate rainfall, averaging around 84 mm for the month. Based on our climate data of the past 30 years, about 10 days of rain are anticipated.

Average sunshine

The days are predominantly sunny, with an estimated total of around 224 hours of sunshine. These sun-filled days are perfect for spending time outside. Whether it's playing sports, visiting a park, or going for a bike ride.

If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Viana do Castelo. June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, November and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Viana do Castelo climate page with graphs.

 

Viana do Castelo, monthly averages in September

Min Temperature 16°C  

Max Temperature 22°C  

Chance of Rain 33%  

Precipitation 84 mm  

Rainy days 10 days  

Humidity 76% *  

Sunshine 224 hours *  

Percentage Sunshine 64% *  

* Data from: Porto, Portugal (52 KM, 32 Miles).

Where to go in Portugal in September

Find out more about the weather in Portugal and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Viana do Castelo, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Viana do Castelo.

Our site offers climate and forecast data for every country in the world. Are you going to Portugal? On this website you can find historical weather averages for many cities in Portugal. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.